The invention belongs to the technical field of the testing, and provides a continuous sample-injection high-temperature bending tester. A low-temperature pre-heating zone hearth and a high-temperature heating zone hearth in parallel arrangement and communicating with each other are arranged in a furnace body of the continuous sample-injection high-temperature bending tester, and sample support plates are further arranged in the furnace body; the sample support plates comprise fixed sample support plates and a movable sample support plates; two rows of fixed sample support plates are symmetrically arranged; and a raw of movable sample support plate is located between two rows of fixed sample support plates; sample positioning slots I are formed on upper end surfaces of the fixed sample support plates, and sample positioning slots II in one-to-one correspondence to the sample positioning slots I are formed on the upper end surface of the movable sample support plate; and a reciprocatingmechanism is arranged to correspond to the movable sample support plate. An aim of accomplishing continuous sample-injection bending test in the same furnace body is realized, the high automation isrealized, the accuracy of the test result is improved, and the energy source is saved.